| 发明名称 |
Display apparatus. |
| 摘要 |
<p>A display apparatus comprises a display, a first diffraction grating for diffracting light from the display, and a second diffraction grating for diffracting diffracted light from the first diffraction grating, so that a half-wavelength-width of the first diffraction grating is set to be larger than that of the second diffraction grating.</p> |
| 申请公布号 |
EP0344810(A2) |
申请公布日期 |
1989.12.06 |
| 申请号 |
EP19890110059 |
申请日期 |
1989.06.02 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KUWAYAMA, TETSURO;TANIGUCHI, NAOSATO;YOSHINAGA, YOKO;KUSHIBIKI, NOBUO |
| 分类号 |
B60K35/00;G02B27/00;G02B27/01;G03H1/02 |
主分类号 |
B60K35/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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